Means for testing fabric.



J. R. GILL. MEANS FOR TESTING FABRIC. AIPLIOATION FILED DEG. 1, 1910.

Patented Jan. 23, 1912.

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MEANS FOR TESTING FABRIC.

Specification of Letters Patent.

OFFCE.

JOHN ROBERT GILL, OF LONDON, ENGLAND.

Patented Jan. 23,1912.

Application filed December 1, 1910. Serial No. 595,113.

To all whom it may concern:

Be it known that I, JOHN ROBERT GILL,

a subject of the King of England, residing at London, England, have invented certain new and useful Improvements in Means for Testing Fabric, of which the following is a to isolate the predetermined area of material below it sothat the number of fibers in unit area can be conveniently counted.

A holding-down member formaterial beneath the magnifier can be used. A con- I venient construction of such holding-down member according to the present invention is one which is pivotally .or otherwise so mounted on its support as to permit of the easy positioning below itof the margin of the sheet of material tested. Further, the

-holding-down member may be doublehinged so that it not only permits of the easy positioningbelow it of themargin of a sheet of material tested, but can be kept parallel with its support at different dis- Fig. 2 is a plan.

' placed tances therefrom to suit the insertion below it of materials of differing thicknesses.

A convenient construction according to the present'invention is illustrated in the accompanying drawings wherein-- Figure l is a vertical central section, and

7 Like letters indicate the drawings. v j

In the illustrated construction a case A to contain electric dry cells has the magnifying device B mounted on a lid A. On the lid is an adjustable electric projector C like parts throughout supplied with current. from dry cells contained in the lower portion of the case and 'servingto illuminate, through an opening B of the magnifier B the upper surface ofthe margin of a sheet of, textile material T. below theholding-down frame or' member B of the magnifier. Below-the holding-down member B aforesaid, which has a window or opening 13 in it, is an opening A in the lid, and within the casing, below the opening A is a second projector C which projects light upward through the window in the casing so as to illuminate the under surface of that portion of the material which is below the holding-down member B There is a lens B in the upper portion of the device B through which the material illuminated from above and below by the projectors C and C can be conveniently viewed. The holding-down member B is hinged to the casing by hinge-links D and can therefore turn about the parallel axes at d d of the double-hinge thus con-- stituted.

In the holding-down member is a slide E containing a plurality of differing openings E E E each adapted to isolate a predetermined area of material below it.

The lamp of the upper projector C is.

hinged to its support, which is the pillar A, so that it can be adjusted in the plane containing that pillar, and the pillar is itself fitted to turn about its own axis thus enabling the lamp to be adjusted in a second plane perpendicular to the plane first mentioned. Suitable switches S are provided for the lamps of the two projectors.

Instead of providing an electric generator within the casing A, the latter may be adaptedto receive a plug connection of the usual or any other convenient type coupled to, say, a wall-plug by a length of flexible conductor.

The source of illumination is so far screened from the eye of the user of the apparatus as not to send rays direct to the eye. The projector G is hooded for this purpose, and for alike purpose the second projector C is placed below the lid A The second projector may be dispensed with. What I claim as my invention and desire to secure by Letters Patent is 1. In a magnifying device the combination of, a support for, the material to be examined, a magnifier carried by such support, a source of light also carried by such support, a movable plate containing a plurality of different openings each adapted to isolate a predetermined area of the material under it, the whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set forth.

2. In a magnifying device the combination of, a support-for the material to be examined having an orlfice therein over which the material is placed, a magnifier carried by such support, a source of light carried on the same side of the support to illuminate one side of the material, a source of light on the other side of the support to illuminate the opposite side of the material through the orifice in the support, means for bringing into operation either of these sources of light, and a movable plate containing a plurality of different openings each adapted to isolate a predetermined area of material under it, the Whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set forth.

3. In a magnifying device. the combination of, a support for the material to be examined, a magnifier carried by such support, a source of light also carried by such support to illuminate the material to be examined, and a hold-down pivotally connected to the support for holding the material to be examined, the whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set forth.

4. In a magnifying device the combination of, a support for the material to be examined, a magnifier carried by such support, a source of light also carried by such support to illuminate the material to be examined, a hold-down for'the material to be examined, and a plate movably mounted on the hold-down and containing a plurality of difierent'openings each adapted to isolate a predetermined area of the material under it, the Whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set forth.

5. Ina magnifying device the combination of, a support for the material to'be examined having 1n it an orifice over which the material is placed during examination, a magnifier carried by such support, a source of light carried on the same side of the support to illuminate one side of the material, a second source of lightsituated on the opposite side of the support to illuminate the material through the orifice in the support,'means for bringing into action either source of light, a hold-down for the material-to be examined, and a plate movably mounted on the hold-down and containing a plurality of different openings each adapted to isolatea predetermined area of material under it, the whole apparatus being connected to the one supportto constitute a portable self-contained unit substantially as set forth.

6. In a magnifying device the combination of, a support for the material to be examined, a magnifier carried by such sup-' port, a source of light also carried by such support to illuminate the material to be examined, and a hold-down for the material to be examined connected to the support by a double hinge permitting it to lie flat on the material on the support, the Whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set ,forth.

7. In a magnifying device the combination of, a support for the material to be examined having in it an orifice over which the material is placed during examination, a magnifier carried by such support, a source of light carried on the same side of the support to illuminate one side of the material, a second source of light situated-on the opposite side of the support to illuminate the material through the orifice in the support, means for bringing into action either source of light, and a hold-down for the material to be examined connected to the support by a double hinge permitting it to lie fiat on the material on the support, the Whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set forth.

8. In a magnifying device the combination of, 'a support for the material to be examined, a magnifier, a source of light car ried by such support to illuminate the material to be examined, and a hold-down hinged to the support and carrying the magnifier, the Whole apparatus being connected to the one support to constitute a portable selfcontained unit, substantially as set forth.

9. In a magnifying device the combination of, a support for the material to be examined having in it an orifice over which the material is placed during examination, a magnifier, a source of light'carried on the same side of the support to illuminate one side of the material to be examined, a'secjustable source of light; carried on the same side of the support to illuminate one side of the material to be examined, a hood movable with said source of light for preventing direct rays therefrom reaching the eye of the observer and reflecting same onto the material,- a hold-down pivotally and hingedly connected to the support for holding the material over the orifice, a slide in the holddoWn provided with a plurality of difl'ere'nt openings for exposing a certain area of the materialover said orifice, a second source of light situated on the opposite side of the support to illuminate the material through the orifice in the support, means for bringing into action either source of light, and an electric-battery for supplying current to the sources of light mounted in a compartment formed in the support, the whole apparatus being connected to the one support to constitute a portable self-contained unit, substantially as set forth.

-In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JOHN ROBERTGILL. Witnesses I H. D. JAMESON; RIPLEY WILSON. 

